<template>
  <div class="search-box">
    <i class="icon-search"></i>
    <input ref="query" class="box" v-model="query" :placeholder="placeholder"/>
    <i @click="clear" v-show="query" class="icon-dismiss"></i>
  </div>
</template>

<script type="text/ecmascript-6">
import { debounce } from 'common/js/util'

export default {
  props: {
    placeholder: {
      type:String,
      default:'搜索歌曲、歌手'
    }
  },
  data() {
    return {
      query: ''
    }
  },
  methods: {
    clear() {
      this.query = ''
    },
    setQuery(query) {
      this.query = query
    },
    blur() {
      this.$refs.query.blur()
    }
  },
  created() {
    this.$watch('query', debounce((newQuery) => {  //监听query值，一旦query发生变化，就发送一个事件
      this.$emit('query', newQuery)
    }, 200))
  }
}
</script>

<style scoped lang="stylus" rel="stylesheet/stylus">
@import "~common/stylus/variable"

.search-box
  display flex
  align-items center
  box-sizing border-box
  width 100%
  padding 0 6px
  height 40px
  background: $color-highlight-background
  border-radius 6px
  .icon-search
      font-size 24px
      color $color-background
  .box
      flex 1
      margin 0 5px
      line-height 25px
      background $color-highlight-background
      color $color-text
      font-size $font-size-medium
      &::placeholder
        color $color-text-d
  .icon-dismiss
    font-size 16px
    color $color-background
</style>
